//
//  OAuthViewController.swift
//  我的微博
//
//  Created by mac on 15/9/7.
//  Copyright © 2015年 szh. All rights reserved.
//

import UIKit
import SVProgressHUD
class OAuthViewController: UIViewController ,UIWebViewDelegate{
    
    //MARK: - 搭建界面
    private lazy var webView = UIWebView()
    
    override func loadView() {
        view = webView
        
        title = "新浪微博"
        
        webView.delegate = self
        
        navigationItem.rightBarButtonItem = UIBarButtonItem(title: "关闭", style: UIBarButtonItemStyle.Plain, target: self, action: "close")
    }
    
    func close(){
        SVProgressHUD.dismiss()
        dismissViewControllerAnimated(true, completion: nil)
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        
        webView.loadRequest(NSURLRequest(URL: NetworkTools.sharedTools.oauthUrl()))
        
    }
    
    //MARK: - UIWebViewDelegate
    func webViewDidStartLoad(webView: UIWebView) {
        SVProgressHUD.show()
    }
    func webViewDidFinishLoad(webView: UIWebView) {
        SVProgressHUD.dismiss()
    }
    func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {
        let urlString = request.URL!.absoluteString

        //判断是否包含回调地址
        if !urlString.hasPrefix(NetworkTools.sharedTools.redirectUri) {
            return true
        }
      
        
        if let query = request.URL?.query where query.hasPrefix("code="){
          
            // 从 query 中截取授权码
            let code = query.substringFromIndex("code=".endIndex)
            print("获取授权码" + code)
            // 换取 TOKEN
            loadAccessToken(code)
        }else{
            close()
        }
        return false
    }
    private func loadAccessToken(code:String){
        NetworkTools.sharedTools.loadAccessToken(code) { (result, error) -> () in
            if error != nil || result == nil{
                
               self.netError()
                return
            }
            //字典转模型
            // 1. 用 token 获取的信息创建用户账户模型
            // 2. 异步加载用户信息,保存用户信息(模型中完成)
            UserAccount(dict: result!).loadUserinfo({ (error) -> () in
                if error != nil{
                    
                    self.netError()
                    return
                }
                // 发送通知切换视图控制器
                NSNotificationCenter.defaultCenter().postNotificationName(HMRootViewControllerSwitchNotification, object: false)
                
                // 关闭控制器（单独讲）Modal 出来的控制器，一定注意需要 dismiss!
                self.close()
            })
        }
    }
    
    deinit{
        print("88")
    }
    
/// 网络错误处理
    private func netError(){
        SVProgressHUD.showInfoWithStatus("你的网络不给力啊")
        // 延时一段时间再关闭
        let when = dispatch_time(DISPATCH_TIME_NOW, Int64(1 * NSEC_PER_SEC))
        dispatch_after(when, dispatch_get_main_queue()) {
            self.close()
        }
    }
}
